2. In which phase will crossing-over occur?

Biology

1 answer:

Strike441 [17]3 years ago

8 0

Crossing over occurs in; Meiosis, Prophase I.

The events that take place in phase, Prophase I are:

Each set of sister chromatids pair up with its homologous pair of chromosomes, forming a set of four chromatids.

• At several places along their length, non-sister chromatids (chromatids that belong to homologous chromosomes but are not identical sister chromatids) undergo a process called crossing over.

• The chromatids of homologous chromosomes cross over one another to hold the set of four chromatids together. Then the crossed sections of the chromatids are exchanged, forming new combinations of alleles in the cell.

• As prophase I continues, the cell prepares for a division of the nucleus like what happens in mitosis.

• Spindle fibers form between the centrioles, which are at opposite ends of the cell.

• The nuclear membrane and the nucleolus disappear.

<em>Prophase I is the longest stage of meiosis, often taking up to 90% of the time required for the entire process to occur. </em>

You might be interested in

_______ is a typical benefit of a job in veterinary medicine. The first veterinary college was founded in _______, France, in th

klasskru [66]

The chance to make a difference in the lives of animals is a typical benefit of a job in veterinary medicine. The first veterinary college was founded in Lyon France, in the year 1761. Veterinary medicine is a medical science that deals with the diagnosis, prevention and treatment of diseases in animals.

5 0

3 years ago

Where is eukaryotes located

xxMikexx [17]

Answer:

Eukaryotes are found in plants, animals, fungi, and protists

6 0

3 years ago

For water to travel across the cell membrane at a substantial rate the water molecules travel through protein channels known as

Kitty [74]

The appropriate response is Facilitated Diffusion. It is the procedure of unconstrained detached transport of atoms or particles over a natural film by means of particular transmembrane indispensable proteins.
In the cell, cases of atoms that must utilize facilitated diffusion to move all through the cell film are glucose, sodium particles, and potassium particles. They pass utilizing transporter proteins through the cell film without vitality along the fixation slope.

5 0

3 years ago

Refer to the following food chain: A fly eats a piece of fruit; a spider eats the fly; a bird eats the spider. The bird dies, an

uranmaximum [27]

When the bird is decomposed, more energy is transfered since its's bigger than a fly, a spider and the amount of fruit a fly can eat.

Hope it helped,

BioTeacher101

5 0

3 years ago

Read 2 more answers

The major source of imbalance in the carbon cycle is the result of

OlgaM077 [116]